visibilityn.
英 vɪzɪ'bɪlɪtɪ | 美 'vɪzə'bɪləti
中文n. 能见度，可见性；能见距离；明显性
词根词源
visibility (n.)c. 1400, "condition of being visible," from Late Latin visibilitatem (nominative visibilitas) "condition of being seen; conspicuousness," from visibilis (see visible). Meaning "range of vision under given conditions" is from 1914. Sense of "prominence, fame, public attention" is recorded from 1958.
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